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6 : STELLAR DYNAMICS I : DISKS
     Questions     Refs.   
(1) Introduction and Overview
(2) Circular Rotation: Oort's Constants
(3) Epicycles
      (a) Overview
      (b) Vertical z Motions
      (c) Radial Motions
      (d) Azimuthal Motion
      (e) Values Near the Solar Neighborhood
(4) Resonances
      (a) Rotating Patterns
      (b) Corotation Resonance (CR)
      (c) Lindblad Resonances (ILR, OLR)
      (d) Importance of Resonances
(5) Density Waves
      (a) Kinematic Density Waves
      (b) Lin-Shu (QSSS) Density Wave Theory
            (i)   Sketch of Approach
            (ii)  Results
      (c) Alternative Sources of Global Density Waves
            (i)   Tides from Companions
            (ii)  Bars and Oval Distortions
(6) Disk Instabilities and Amplification
      (a) Local Disk Stability : Toomre's Q Parameter
      (b) Swing Amplification
            (i)   The Swing Amplifier
            (ii)  Feedback for the Amplifier
      (c) Bar Instability and its Suppression